package com.heima.media.controller;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.read.listener.ReadListener;
import com.alibaba.excel.util.MapUtils;
import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.heima.common.dto.ResponseResult;
import com.heima.media.entity.WmNews;
import com.heima.media.entity.WmSensitive;
import com.heima.media.service.IAuditService;
import com.heima.media.service.IWmNewsService;
import com.heima.media.service.IWmSensitiveService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import sun.security.krb5.internal.TicketFlags;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.Date;
import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("test")
public class TestController {

    @Autowired
    private IAuditService auditService;

    @Autowired
    private IWmNewsService newsService;

    @Autowired
    private IWmSensitiveService sensitiveService;

    @GetMapping("/audit/{id}")
    public ResponseResult audit(@PathVariable("id") Integer id) {
        // 查询文章
        WmNews wmNews = newsService.getById(id);
        // 审核
        auditService.audit(wmNews);
        return ResponseResult.okResult();
    }

    /*
     */

    /**
     * 文件上传
     * <p>
     * 1. 创建excel对应的实体对象 参照{@link WmSensitive}
     * <p>
     * 2. 由于默认一行行的读取excel，所以需要创建excel一行一行的回调监听器，参照{@link }
     * <p>
     * 3. 直接读即可
     */
    @PostMapping("upload")
    @ResponseBody
    public String upload(MultipartFile file) throws IOException {
        // 参数 1 输入流  2 使用哪个类来读取表头
        EasyExcel.read(file.getInputStream(), WmSensitive.class, new ReadListener<WmSensitive>() {
            @Override
            public void invoke(WmSensitive data, AnalysisContext context) {
                // 每读到一行记录执行该方法
                System.out.println(data);
//              sensitiveService
//              System.out.println("getSensitives    :    "+data.getSensitives());
//              System.out.println("getCreatedTime    :    "+data.getCreatedTime());
//                查询这一行数据是否存在于数据库
//               从数据库查询
                LambdaQueryWrapper<WmSensitive> queryWrapper = new LambdaQueryWrapper<>();
//            指定查询那一列
                queryWrapper.select(WmSensitive::getSensitives);
                queryWrapper.select(WmSensitive::getSensitives);
                List<String> woeds = sensitiveService.listObjs(queryWrapper,o -> o.toString());
                boolean flag = true;
                for (String woed : woeds) {
                    if (woed.equals(data.getSensitives())){
                        flag = false;
                    }
                }
                if (flag){
                    WmSensitive sensitive = new WmSensitive();
                    sensitive.setSensitives(data.getSensitives());
                    sensitive.setCreatedTime(new Date());
                    sensitiveService.save(sensitive);
                }
                // todo 更新到数据库 判断该敏感词是否已经存在

            }

            @Override
            public void doAfterAllAnalysed(AnalysisContext context) {
                // 全部读完后执行该方法
                System.out.println("excel读取完成.");
            }
        }).sheet().doRead();
        return "success";
    }


    /**
     * 文件下载并且失败的时候返回json（默认失败了会返回一个有部分数据的Excel）
     *
     * @since 2.1.1
     */
    @GetMapping("downloadFailedUsingJson")
    public void downloadFailedUsingJson(HttpServletResponse response) throws IOException {
        // 这里注意 有同学反应使用swagger 会导致各种问题，请直接用浏览器或者用postman
        try {
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            response.setCharacterEncoding("utf-8");
            // 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
            String fileName = URLEncoder.encode("测试", "UTF-8").replaceAll("\\+", "%20");
            response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");
            // 这里需要设置不关闭流
            EasyExcel.write(response.getOutputStream(), WmSensitive.class).autoCloseStream(Boolean.FALSE).sheet("模板")
                    .doWrite(data());
        } catch (Exception e) {
            // 重置response
            response.reset();
            response.setContentType("application/json");
            response.setCharacterEncoding("utf-8");
            Map<String, String> map = MapUtils.newHashMap();
            map.put("status", "failure");
            map.put("message", "下载文件失败" + e.getMessage());
            response.getWriter().println(JSON.toJSONString(map));
        }
    }

    /**
     * 查询数据
     *
     * @return
     */
    private List<WmSensitive> data() {
        List<WmSensitive> list = sensitiveService.list();
        return list;
    }
}
